html,
body {
    width: 100%;
    height: 100%;
}

a {
    text-decoration: none;
    /* 去除默认的下划线 */
    outline: none;
    /* 去除旧版浏览器的点击后的外虚线框 */
    color: #000;
}

.bc {
    width: 100%;
    min-width: 1300px;
    height: 100%;
    background: url(../img/bc.jpg) no-repeat;
    background-size: 100% 100%;
    display: flex;
    justify-content: center;
    align-items: center;

    h4 {
        font-size: 54px;
        color: rgb(255, 255, 255);
        transform: translateY(-50px);
    }

    .more {
        font-size: 20px;
        color: rgb(255, 255, 255);
        border: 1px solid white;
        border-radius: 40px;
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100px;
        padding: 10px 12px;
        margin: 0 auto;
        transform: translateY(-20px);
    }
}

.main {
    width: 1300px;
    margin: 50px auto;
    overflow: hidden;
    overflow: auto;

    .introduce {
        margin: 100px auto;
        width: 1300px;
        height: 500px;
        border-top: 2px solid blue;
        position: relative;

        .about {
            color: rgb(65, 166, 255);
            position: absolute;
            top: -19.5px;
            left: 50%;
            font-size: 35px;
            font-weight: 700;
            line-height: 35px;
            margin-left: -90px;
            background-color: white;
            border-left: 20px solid white;
            border-right: 20px solid white;
        }

        .honor {
            color: rgb(65, 166, 255);
            font-weight: 700;
            text-align: center;
            margin: 50px 0 30px 0;
            font-size: 20px;
        }

        .infor {
            font-size: 20px;
            line-height: 2.5em;
            text-align: center;
        }
    }

    .scenery {
        position: relative;
        width: 1300px;
        height: 860px;

        .topic {
            position: absolute;
            top: -75px;
            left: 366px;
            font-size: 38px;
            color: rgb(46, 9, 170);
        }

        .etc {
            width: 1300px;
            height: 600px;

            :nth-child(3n) {
                margin-right: 0;
            }

            li {
                float: left;
                width: 400px;
                height: 250px;
                margin-right: 50px;
                margin-top: 30px;
                border-radius: 10px;
                overflow: hidden;
                position: relative;

                img {
                    width: 100%;
                    height: 100%;
                }

                .mask {
                    position: absolute;
                    top: 0;
                    right: 0;
                    width: 100%;
                    height: 100%;
                    background-color: rgba(26, 23, 23, 0.8);
                    z-index: 900;
                    text-align: center;
                    display: none;

                    h3 {
                        color: rgb(255, 242, 242);
                        font-size: 40px;
                        font-weight: 500;
                        text-align: center;
                        margin-top: 70px;
                    }

                    a {
                        margin: 0 auto;
                        display: block;
                        width: 110px;
                        height: 45px;
                        border-radius: 25px;

                        button {
                            padding: 0 25px;
                            height: 45px;
                            font-size: 15px;
                            margin-top: 30px;
                            border-radius: 25px;
                            border: none;
                            cursor: pointer;
                        }
                    }
                }
            }
        }
    }

    .specialty {
        width: 1300px;
        height: 700px;
        position: relative;

        .topic {
            position: absolute;
            top: -100px;
            left: 366px;
            font-size: 38px;
            color: rgb(46, 9, 170);
        }

        .etc {
            width: 1300px;
            height: 380px;
            box-sizing: border-box;

            li {
                position: relative;
                float: left;
                width: 302.5px;
                margin-right: 30px;
                height: 380px;
                overflow: hidden;
                box-sizing: border-box;
                background-color: rgba(240, 239, 239, 0.5);
                box-shadow: 0 15px 10px rgba(171, 171, 171, 0.4);

                &:nth-child(4) {
                    margin-right: 0;
                }

                a {
                    display: block;
                    width: 302.5px;
                    height: 390px;

                    .spe-bc {
                        width: 302.5px;
                        height: 220px;
                        overflow: hidden;

                        img {
                            width: 302.5px;
                            height: 220px;
                        }
                    }

                    div {
                        h3 {
                            margin-top: 20px;
                            margin-left: 20px;
                        }

                        p {
                            margin-top: 20px;
                            margin-left: 20px;
                            line-height: 2em;
                            font-size: 15px;
                        }
                    }
                }
            }
        }
    }

    .story {
        width: 1300px;
        height: 250px;
        margin-bottom: 130px;
        position: relative;

        .topic {
            position: absolute;
            top: -100px;
            left: 393px;
            font-size: 38px;
            color: rgb(46, 9, 170);
        }

        ul {
            width: 1300px;
            height: 250px;

            li {
                float: left;
                width: 302.5px;
                height: 250px;
                margin-right: 30px;
                background-color: antiquewhite;
                position: relative;
                overflow: hidden;

                &:nth-child(4) {
                    margin-right: 0;
                }

                a {
                    display: block;
                    width: 302.5px;
                    height: 250px;

                    img {
                        width: 100%;
                        height: 100%;
                    }

                    .mask {
                        box-sizing: border-box;
                        position: absolute;
                        top: 192px;
                        left: 0;
                        background-color: rgba(0, 0, 0, 0.7);
                        width: 302.5px;
                        height: 250px;
                        color: white;
                        padding: 5px 20px;

                        h4 {
                            font-weight: 400;
                            font-size: 20px;
                        }

                        h5 {
                            margin: 2px 0 5px 0;
                            font-weight: 400;
                        }

                        p {
                            font-size: 14px;
                            text-indent: 2em;
                            line-height: 20px;
                        }
                    }
                }
            }
        }
    }
}